SLOW-DIGESTING PROTEIN

Faster digesting protein is desirable immediately before and after exercise to help refuel recovering muscles, but slow digestion and absorption may be more beneficial at other times including bedtime when your body typically goes for hours without food. Casein products are acid sensitive and thicken in the stomach. Compared to some other proteins, it can take longer for our Gold Standard 100% Casein™ to be broken down into its amino acid subcomponents. By using only premium micellar casein as a protein source, we've created a formula that sets the standard for slow digesting protein support. 24g of Micellar Casein

Athletes Who Use Gold Standard 100% Casein

RACHEL PONDER

“This is a staple for me when dieting. I have it at night because the slow digesting benefits keep me from being famished the next morning and it's like a nightly treat!! I don't drink it though; I mix it with a little bit of water and nut butter to make a nice pudding batter and stick in the fridge for 10-20 min. If I'm wanting a warm treat, I'll mix it with a little egg whites and microwave for 1 min and top it with some nut butter!”

TOBIAS YOUNG

“I like to cook and bake with casein because of the thicker texture, but I also love my protein pudding. Casein is a night time staple for me because I want the slow release of aminos in my blood stream as I sleep. Casein also helps keep me satisfied, so I don't wake up hungry in the middle of the night.”

MICHAEL DEL ZOPPO

“Gold Standard 100% Casein is a great source of night time recovery. I mix up casein an hour before bed to help rebuild and recover and to keep me full throughout the night. Casein protein can help provide longer lasting amino acid support compared to whey”

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Optimum Nutrition, Inc. (ON) is part of Glanbia, a leading international cheese and nutritional ingredients group. ON owns and operates two premium sports nutrition brands, Optimum Nutrition and American Body Building (A.B.B.). Together, these brands provide active adults around the world with a comprehensive line of powdered, bar, tablet, capsule and ready to drink products.

Company Owned & Operated Manufacturing

With state-of-the-art production facilities in Aurora, Illinois; Walterboro, South Carolina and Sunrise, Florida, ON is one of the few sports nutrition companies to manufacture in every product category. From the very beginning in 1986, Optimum Nutrition has always taken a hands-on approach to maintaining the very highest standards of quality.

Uncompromising Quality

Before a single machine is turned on in our manufacturing facilities, ON procurement professionals carefully select the most premium raw materials. A Certificate of Analysis is required for every ingredient, which is then tested and retested for compliance. Quality assurance performs daily inspections of our current Good Manufacturing Practices (cGMPs) compliant facilities, which are Certified for Sport by NSF.

History of Innovation

In addition to making Gold Standard 100% Whey, the worlds' best-selling whey protein, ON created the slowly digesting protein category with Gold Standard 100% Casein. ON also created the anytime energy category, which remains dominated by Essential Amino Energy.

Customer Satisfaction

ON's strict ingredients selection, quality control, lab testing and manufacturing processes are all done for one reason: to provide you with the highest quality sports nutrition products available. Our company was founded with a mission to bring consistent quality to the marketplace, and we are constantly working on setting even higher standards.